Design an input stage circuit which accepts two input electrodes, and outputs a signal to an A/D, which will output to an MCU with a certain amount of given constraints in their specification (leaving out their actual values here) * Input signal voltage range, frequency range, input impedance * Various noise factors (i.e. thermal noise range, electrode noise, electrode movement artifacts, noise from power supply) * Sampling rate by MCU * Physical constraints of PCB, component height requirements, PCB placement requirements, board size requirements * Electrical constraints (i.e. current limits, amplifier gain spec, electrode impedance, frequency band limits) * IEC60601-1 Medical Safety Standard current limits
